// 使用预处理器增加调试语句
#include <stdio.h>
#define DEBUG

int process(int i, int j, int k){
	return i + j + k;
}

int main(void){
	int i, j, k, nread;
	nread = scanf("%d %d %d", &i, &j, &k);
	
	#ifdef DEBUG
		fprintf(stderr, "Number of integers read = %i\n", nread);
		fprintf(stderr, "i = %i, j = %i, k = %i\n", i, j, k);
	#endif
	
	printf("%i\n", process(i, j, k));
	return 0;
}
